ASTROSAT CZTI

Data Quality Report

Orbit 53555

Creation date: 2025-08-22T14:36:43.840104
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_004T05_9000006502_53555cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53555cztM0_level2_quad_clean.evt
Size (bytes)838,117,44075,732,480
Size799.3 MB 72.2 MB
Events in quadrant A9,338,626372,937
Events in quadrant B4,267,550651,367
Events in quadrant C6,057,497546,404
Events in quadrant D10,875,624284,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320751
B0169001
C0223761
D0365991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6267269643.018988%
B62682714.323548%
C626869911.151883%
D6268335453.509892%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7292 6267 2358 2358 32.34% 37.63%
B 7293 6268 113 113 1.55% 1.80%
C 7292 6267 580 580 7.95% 9.25%
D 7293 6268 3346 3346 45.88% 53.38%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 3 63 5131374 37009.72 555 541 138.6
A 12 115 1115314 8041.08 555 541 138.6
A 15 174 594491 4284.28 555 541 138.6
B 10 254 838021 5732.55 685 662 146.1
B 5 185 197544 1347.85 685 662 146.1
B 10 247 133310 908.11 685 662 146.1
C 15 224 1624286 9038.92 651 645 179.6
C 12 254 562158 3125.98 651 645 179.6
C 12 2 403333 2241.79 651 645 179.6
D 15 94 8439793 67740.04 428 408 124.6
D 2 120 147257 1178.71 428 408 124.6
D 3 12 122640 981.11 428 408 124.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter